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THOMAS 'nn'rnnnwoon AND JOHN P. BABGOOK, OF WESTERLY, RHODE ISLAND.

. Letters Patent No. 74,7 4, dated February 18, 1868; anteddtecl February 7, 1868.

IMPROVEMENT in SPINNING-mics.

TO ALL WHOM IT MAY CONCERN:

' Be it known that we, THOMAS Nnrrnnnwoon and Joan P. BABGOCK, of Westerly, in the. county of Washingtou,-and in the State of Rhode Island, have invented certain new and useful Improvements in Spinning- Jack s; and do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawings and the letters of reference marked thereorb making Part-of this P fication. I I t l i Figure 1 represents aside view of the jack,

Figure 2 an end view of the same, and

Figure 3 a view of the jack-carriage and knee-hoard. p

Our invention has for its objects the constructionof e. spinning-jack, to obviatethe difliculties now attending the use of jacks, and efi'ectually, and in a simple manner, to put the friction on to the driving-wheelot' the jack, by sliding the belt partially upon it from theloose pulley, to assist the spinner in winding the yarn.

In the annexed drawings, A represents the carriage, which we construct of the usual form, and which is placed upon the way 0. Upon the outer end of this carriage we place the knee-hoard B, by which said carriage is forced home. 'H H H"reprcsent three stander-(1:1, placed in the floor at the inner end of the way. C, and upon which is secured the shipper-hourd -G by means of the brackets s s. I represents a horizontal shaft, attached by means of suitable hearings to the standards H and H, and'having a pendent arm, f, which is connected to andoperates the horizontal rod D. Secured to this shaft, near its inner end, and extending ourwards towards the rod D, is a curved cum, E, which operates said red by means of the carriage A, as will be hereafter specified. Between the standards H and H, upon the shaft I, is a rod,having a weight, But its end, and to which rod is connected the vcrtical wire 9, which is attached, at its upper end, to the rod 1', which forms, of itself, a spring, and operates the shipper-board by means of its arm striking against the pin m. X represents an ear or bearing, placed upon the outer end of the floor, and between which is pivoted the tripper a, having a set-screw, b, beneath it. Upon the outer end of the carriage we place a. rod, d bent at three separate angles, and having a'vertical pin connected to its inner end, which pin is directly above the outer end of the tripper when the carriagcis out, as seen in the drawing. The outer end ofthis rod passes through a small sliding rod, 11, which projects towards the knee-board, and which is intended to operate it. 6 represents a spring, secured horizontally on the inside of the carriage, passes through the inner end of rod d, and through the vertical pin,

and the rod is bythe spring restored to itsnormal condition, after being pressed down by the knee-hoard. The knee-board, herein shown, may be, and usually is, pluced upon the inner side of the'jack, instead of the outer, as herein shown. v i

It will be seen that, when the carriage is out, the weight falls, and the rod D slides back against the tripper'or latch a, for thepurpose of putting on the friction. When the carriage runs in, the pin :c strikes the end of the curved arm E, and, pressing it down,throws'-tl1e strap on the usual loose pulley, at the same time. moving the rod D forward, in which position it is held by the end of the latch 01 and weight F; When the carriage is at the highest part of the arm, it is still several inches out, and in the position which is required for piecing up the threads. When the carriage is run out, the descent of the rod, operated through the knee-board, 3 causes the pin to bear on the outer end of the latch at, raising the inner end from contact with the rod D, and

loose, partially on the fast pulley, and thus assisting the winding-on motion.

The weight F acts upon the shipper-board 'by ineansof the rods 9 and z', and readily throws the belt from allowing it to fly bacli by reason of the pressure of the wci ht F, thereby moving thc belt-shipper from the the loose to the tight pulley, obviating the necessity of using a spring, which we find to be continually getting out of repair. l Vhenevei it is necessary to place the belt farther on to the tight pulley, it is only necessary to shorten the set-screw I). i

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-" 1. The arrangement of the shaft I, with pendent armf and curved cam E, weight 15, rod g, and spring-rod 'z', for operating the shipper-hoard G, in the manner substantially as specified.

2. The arrangement of therods d dfl pin d, andknce-board B, on the car A, in combination with the latch a nD[l 10d. D, in the manner and for the purposes set forth. v l

i In testimony that we claim the foregoing, weh ave hereunto set our hands,'this 15th day of January, 1867.

' THOMAS NETHERWOOD,

JOHN 1 BABGOQK.

Witnesses v p BENJAMIN Bnonnnnnr,

Wm. TIMBURY; 

